ABSTRACT

The microRNA (miRNA) gene is small RNA molecule, approximate 20 nucleotides (nts) in length, and also the miRNA is information in a cell as well as the mobile genetic information; therefore, when only one kind of tumor suppressor RNA information gene (Rig) was intravenously administrated, tumorigenic cells can be retuned to the normal cells in vivo. Although the processes of oncogenic have multiple ways, Rig can control its complex system, such as cell cycle with tuning to translation and transcription processing systems. In quite recent experiments, human breast milk and bovine milk have contained Rigs into their microvesicular components. Both also contain the infant nutrient elements. Further, the siRNA genes in artificial nanoparticles were delivered via oral and could restore mouse intestinal inflamemation. In general, Rigs in the diet were found stable to orally affect the digested animals, therefore, the xenotropic Rigs in Rig transgenic plants could also protect from HIV-1 infection by the edible vaccine via intestinal cells. Because orally delivered miRNA as information could be incorporated into intestinal cells and transmitted into intraand inter-cells and between individuals to wave the system of translation and transcription. Given these mobile characters of Rigs, even though there is the xenotropic miRNA issue, edible Rig agents in plants as a vaccine would be applicable for the Rig diseases (RigDs) by the information technology-based therapy (iTBT) cooperated with system-based therapies such as stem cell therapy and chemotherapy.

1. Introduction

For eradication of human immunodeficiency virus type 1 (HIV-1), one of transposable elements (TEs), we should recognize that the TEs might be one of the RNA genes and the TEs is major source of the microRNA (miRNA) gene in the genome [1]. The control of epigene is involved in the eradication of HIV-1 because provirus of HIV-1 is held in the human genome of the infected reservoir cells. Therefore, miRNAs and the TEs are implicated in gene and genome evolution [2-6]. Long-terminal repeat (LTR) retrotransposons are the most abundant TEs in the Plant kingdom [7]. In some plants, LTR retrotransposon can make up more than 70% of the genome [8], whereas in human genome the LTR transposons are more than 8% [1,9]. Although the retrotransposition in the human genome induces excessive gene expression near the insertion site and occasionally occurs tumorigenesis, it has recently been proved that the retrotransposon Alu insertion inactivates the neighboring progesterone receptor gene expression through an epigenetic mechanism [10]. DNA methylation is thought to be the mechanism; however, Byun et al. described that what triggers the DNA methylation is not clear, therefore, environmental cues are believed to be responsible for promoting movement of its transposon. This finding strongly suggested a possibility of the RNA wave that TE-derived many RNA information genes (Rigs), such as miRNA genes can trigger the change of the epigenetic state [1]. Thus, the Rigs from TEs can suppress or enhance gene expression including TE its own in transcription including the epigene and in post-transcription.

In plant, transitivity was found and miRNA-mediated cleavage of an RNA by transitivity can trigger the production of secondary siRNA [11,12]. The miRNA-dependent transacting siRNA (tasiRNA) as Rigs from the transitivity are generated from noncoding retrotransposons as well as protein-coding mRNA [13]. The secondary siRNA silenced additional genes. As this amplification of transitivity presents in human cells [14], we could expect miRNA* from the transposons to promote secondary siRNA production on its own targets, such as own retrotranspson’s transcript and host pri-miRNA [1]. Recently the miRNA gene has been reported to control its own pri-miRNA in the nucleus [15]. Although the endogenous siRNA and piRNA have already been reported to be involved in epigenetic transcriptional suppression [16,17], it is possible that the Rigs derived from the retrotransposon inactivate the neighboring and viral protein gene expression, while HIV-1 siRNAs affect gene expression of infected host cell [18] and tasiRNA-like offset miRNAs (moRNAs) are involved in the epigenetic regulation of gene expression in human cell line [19]. Further, some plantsor food-derived miRNAs accumulate in the serum of humans and could regulate gene expression of food-derived miRNA incorporated individuals (Figure 1(a)) [20]. These data suggest that sequence specific information of mobile Rigs could be available for fine-tuning of gene expression among the kingdoms of plants, animals and humans via foods and/or viruses. Since a part of sequences in human immunodficiency virus type 1 (HIV-1) miR-N367 is conserved in the plant miRNA, such as osa-miR-394 [21], one of LTR transposon HIV-1 may be transmitted from plant foods to chimpanzee, and then humans.

Edible vaccines or plant immune vaccines have been investigated as cost-effective ones against infectious diseases including human viral infections, such as human papilloma virus (HPV), hepatitis C virus (HCV), hepatictis B virus (HBV), rabis virus, Epstein-Barr virus (EBV) and human immunodeficiency virus (HIV) [22-29]. Oral vaccines are desirable from several stand points; 1) plant vaccines can serve low cost; 2) they are not accompanied by contamination due to endotoxins or pyrogens during purification of vaccines; 3) the cold chain for maintenance and trained medical staff for injectable vaccines/ sterile needles are not needed in the developing countries as well as developed countries; 4) They have lots of ecological parameters. Although the plant vaccines were developed in more potent immunogen and they were evaluated with immunogenicity, at that time, there was no idea that Rigs with the edible immunogens could be incorporated into the human cells and the edible Rig agents as a vaccine also keep above advantageous points. The edible Rig and anti-Rig vaccine, which could be derived from

Rig as well as its derivatives-expressing or Rig-contained foods, could directly control the life tuning and would be evaluated with Rig profiling.

The environmental Rigs are in foods, viruses and others, such as humans, Japanese shrine woods and dust in nature and could induce several Rig diseases (RigDs) with environmental stresses and chemicals (Figure 1(b)), therefore, the environmental stresses can cause alter of the Rig profiles [30]. Further, the mobile miRNA genes could be delivered by RNA gene vectors, foods as well as stem cells, therefore, in turn, all gene therapies, stem cell therapies and therapies with diets are the vehicular system of delivery for the Rigs. The highly active antiretroviral therapy (HAART) could efficiently repress HIV- 1 replication to the viral level of low or undetectable in the HIV-1-infected individuals [31]. But survivors remained as viral reserved patients with long-term complicated diseases, such as cardiovascular disease, liver and renal failure, neurodegeneration and malignancy [32-36] as less achievement of reconstitution in complete CD4+ T cell numbers [37,38]. Therefore, autologous and allogeneic hematopoietic stem cell transplantation have been performed to cure long-lived viral reservoirs [39]; however, no clinical benefit or transient increased CD4 counts has been mainly observed by lots of reports [40]. Although allogeneic CCR5∆32 homozygous T cell transplant together with myeloablative therapy can suppress HIV-1 replication and eradicated HIV-1 reservoirs upon only one clinical outcome [41], the result from the allogenic stem cell therapy cannot have yet been clearly explained the reason why HIV-1 was eliminated. Further, rare CCR5∆32 donors for stem cell therapy were found in the geographical search [42]. Recently, allogeneic HIV- 1-resistant CCR5∆32 donors T cells with ZFN gene transduction have been planed to be used for stem cell therapy and the first phase I clinical trial is being evaluated with CCR5 KO T cells (clinicaltrials.gov NCT00842634 in US), but it is not autologous stem cells because infected patients’ autologous stem cells or induced pluripotent stem (iPS) cells cannot used for the stem cell research to be safe; together with lots of failures of stem cell therapy for HIV-1 infection with autologous T cells [40]. Further, although artificially reprogrammed allogeneic cells from CCR5∆32 donors T cells would be used for HIV-1 infection, the endpoint of therapy with the iPS cells would be faced on xenotropic microRNA problem [43]. Thus, in HIV-1 stem cell therapy, there is no idea that mobile Rigs from the implanted stem cells could have a responsible for HIV-1 replication. The mobile Rigs for HIV-1 therapy are completely dropped in all papers about HIV-1 eradication because nobody investigated foods which above patient ate. In this paper, we would explain about the possible Rig vaccines for HIV-1 eradication in the longitudinal HIV-1 infection and into perspective.

2. Genetic Information of miRNAs

2.1. miRNAs and TEs

miRNAs are the dominance of small endogenous RNA, approximate 20 nucleotides (nts) in humans and the miRNA genes are produced from non-coding regions and coding regions containing the introns or exons in the human genome [44]. These endogenous small RNAs can inhibit or augment posttranscriptional events and control transcription [45,46]. The endogenous short interfering RNA (end-siRNA) and miRNA genes interact with argonaute (Ago) protein and small RNA/Ago complex leads to translational suppression [47,48] or mRNA decay [49] and the Piwi subfamily of Ago proteins would be restricted to express in the germ cells but miRNAs inhibit the expression of TEs in the genome of germ cells [50]. Subsequently, small RNAs could regulate gene expression and retroelement activation. It suggests that functioning of some miRNAs may be Ago-independent about TE regulation. TE has been major producers of the small RNA as described above; therefore, the retroposable Rigs could be retrohoming to germ line haploid via blood circulation, then sperms and eggs could carry the resident miRNAs and during stem cell development, the small RNAs could act to maintain the TE in a silenced state [51-53]. Further, in animal epigenome, mouse TEderived piRNAs guide DNA methylation to TEs [17] and small RNAs also cross-talk heterochromatin modification [16]. Thus, it is simply shown that the small RNA is always required for the regulation of TEs [54], even if HIV-1 infection because HIV-1 RNA would be processed to small RNAs in the cytoplasm of cells [55,56]. On the next subject, the switch on-off mechanism among miRNA/mRNA RNA interactions are discussed for the control of TEs.

2.2. The Seed Theory with miRNAs

In the case of translational silencing, the 5’ end of and the 3’ end of small RNA bind to the MID domain and the PAZ domain of Ago, respectively [48]. The seed (nucleotides 2 - 7) of miRNA targeted to >90% of the 3’UTRs of the human genome [57-59]. The seed region of miRNA/Ago can target to the 3’ untranslated region of mRNAs and the GW protein family also binds to Ago, then the GW induces deadenylation of the target mRNA by recruiting deadenylases. Further, poly(A) of mRNA is also shortened or mRNA is decapped by mRNA decay system [46]. However, recently, translational suppression of miR-430 has been happened before initiation phase and before mRNA decay of the translation pathway in zebrafish [60] or in Drosophila, therefore, miRNA-mediated silencing inhibited translation at an early step in vivo [49]. The explanation of miRNA-dependent translational suppression is always one to one system; however, the seed of miRNA and mRNA are not one to one interaction [61] and actually mRNAs targeted by more than two miRNA seeds have increased expression variability in human brain [62] and the seed less miRNA inhibited target mRNA translation [63]. Food-derived mature plant MIR-168a targets exon 4 of LDLRAP1 protein coding region and decreased the protein level but did not affect the mRNA level in vivo [64] and Ago/mRNA binding can take place in the absent of miRNA [65]; suggesting that translational suppression mechanisms by small RNAs is not so simple ones and miRNA is information but not the system. The system of the Ago would be analogous to a Turing machine of the quantum computer [66], and miRNA is income of information and DNA is its hard copy, therefore, it is assumed that the miRNA genes are the language, which is the expression of life.

2.3. RNA Wave Model with the Quantum RNA Language (QRL)

Although the proposition that life is fine-tuned by miRNA information is generally accepted [67], the mechanisms of alteration of the miRNA profile by the environmental factors without Rigs remain elusive. The RNA wave model 2000 consists, 1) the Rigs as a mobile genetic element induce transcriptional and posttranscriptional silencing via net working-processes; 2) the RNA information is supplied by the Rigs expands to intracellular, intercellular, intraorgan, interorgan, intraspecies, and interspecies under the cycle of life into the global environment; 3) the mobile Rigs can self-proliferate; and 4) cells contain two types information as resident and genomic Rigs [66]. Based on the RNA wave, the mobile miRNA genes are information but not the system [67,68], therefore, the Rigs can fine-tune our life, and evolution, development, proliferation, apoptosis, oncogenesis, signaltransduction, immune-reaction, metabolism, mutation and recombination of the human genomic DNA in somatic and germ cells, and behaviouring [67]. It means that Rigs are involved in most of all events in life tuning as causes, results and processes. Dysregulation and mull-function of the Rigs are involved in the pathogenesis of most of all human diseases, cancer, neurodegeneration, heartfailure, infectious diseases, inflammation, fibrosis, atherosclerosis, cardiovascular diseases, abnormal behaviour, metabolic diseases, etc. (Figure 1(b)). In the case of cancer, it is well known that the miRNA profiles in the tumor cells are changed and magnetic resonance image (MRI) is used for detection of tumor parts in organs; therefore, miRNA electron spin should be changed. The pulse waves of the electrons in the organ hydrogen atoms of water in the MRI could be derived from a source of the magnetic electron spin produced by altered resident miRNA electron spin. It is actually shown that alteration of electron spin by sensitive spin-labeling electron spin resonance (ESR) was detected in miR-125b expressed breast cancer cells when compared with less miR-125b expressed control cells [69]. Thus, the superposing of the electron spin direction in the high dimensions of Rigs has been introduced as the quantum RNA language (QRL) [67].

2.3.1. The Limits of the Seed Theory

The miRNA genes’ number has been reported to be 202,765 per a cell and Ago 1 to 4 molecules were approximately 15,000 - 17,000 [70,71]. Therefore, >90% of the miRNA genes did not bind Ago proteins, further, mRNAs would be associated with a seven-fold excess of miRNA from Janas et al. data. Their data suggest that it does not make sense about the stoichimetric model of miRNA-mediated repression for the gene expression and they speculated that Ago supports a model of catalytic function of Ago with P-body-independent in translational repression, that contains that Ago-free miRNAs are stabilized by binding to target mRNAs, and target mRNAs are destabilized when their miRNA recognition elements are occupied by miRNAs, allowing transient Ago binding. Although the average G/C content of seed sequences was higher than that of mature miRNA sequences, suggesting that an association between the degree of functionality of the sequence and its average G/C content [72], they did not find statistically significant differences in the ability of seedless and seed-region-containing miRNAmRNA duplexes to be repressed. Furthermore, there was no discussion about how Ago-free miRNAs are stabilized and target mRNAs are destabilized catalytically because of Ago enzyme-free. The data suggest that the thermodynamic stability of seed-dependent miRNA-target mRNA duplexes is not completely involved in mechanisms upon translational repression of gene expression. When target mRNA has been replaced with target TE, amounts of total Ago protein would be shortened more. And although CeRNA hypothesis explained that the miRNAmRNA interaction itself is a language of RNA [73], in the case of the long non-coding RNA such as TE, it is not yet known whether Ago system and base-pairing system have any responsible for suppression system of TE expression or not [74].

2.3.2. The QRLs

Before the seed theory has been established, we have developed in new algorithms for the miRNA genes using quantum bits as physicochemical characters of RNA bases with measurement of electron spin according to above RNA wave model [67,75] (see Figure 2). In the Rig quantum code with the fragment molecular orbit method (FMO), positive potencies of the G base cluster

was found. Although there is a hypothesis that the G and C bases would expand toward the C, G, A and U ones in the early evolution of RNA [76,77], canonical RNA editing occurs in A-to-I and C-to-U of 3’ UTRs at miRNA target sites [78]; therefore, the G base is stable to the RNA editing although the I base is recognized as the G base. Recently, the seed-related G-rich motif has modulated miRNA-directed host mRNA regulation in mouse embryonic stem (ES) cells [79] and mRNAs harboring G-bulge sites were bound by the seed of miR-124 in mouse brain [80]. Therefore, these results suggest that the G base is the important pivot nucleotide for transmission of RNA information. However, there is a long seed through whole sequences of miRNAs and long noncoding RNA (lncRNA) can control gene translation in brain and hematopoietic cells [81-83]. Further, it has been reported that seed matches are not a sufficient predictor for C. elegans lsy-6/the cog-1 homeobox gene mRNA 3’UTR interaction [84] and in zebrafish, miR- 214 without canonical seed paring can effectively target a mRNA for silencing [63]. Relation between HCV site 2 RNA and the seed sequence of miR-122 has been reported that the 3’ tail nucleotide miR-122 is important for recognition of HCV site 2 in selective 2’-hydroxyl acylation analyzed by primer extension (SHAPE) chemistry assay [85] and this kind of 3’ tail effect has previously been reported [58, 86]. These data suggested that the seed pairing of the 5’ → 3’ to the 3’ → 5’ nucleotide (nt) sequences is not enough to explain how Rigs to develop bioinformation. The superposing quantum states of Rigs with a quantum-based algorithm were preliminarily shown in Figure 2, between genotypes of hepatitis C virus (HCV) site 2 and miR-122 by QRL (Figure 2(a)). The QRL was independent of the seed region in miR-122. Further, when the entangling quantum phase between HIV-1 3’LTR and miR-N367, #4, and H1 was investigated by the QRL, the QRL was also independent of the seed region in miRNAs (Figure 2(b)). When compared quantum state of the entangled three miRNAs/the HIV-1 LTR, this case showed condensation of spin, like spin squeezing in a Bose-Einstein condensates (BEC) (red squares: Figure 2(b)) [87,88]. Since there are not ultracold atoms, the condensation of miRNA electron spin may display quantum behaviour and function of miRNA such as the QRL and the altered miRNA BEC in the cells may dominantly affect the pulse waves of the electrons in the organ hydrogen atoms of water in the MRI.

2.4. HIV-1 as a Rig

While de novo activation of TEs causes genetic disorders [4,89] and somatic retrotransposition of TE has been reported to be active in the human brain [90], except for the epigeneitic regulation of TEs, there is less explanation for the control mechanisms of the observed transposon activity. We have shown that one of TEs, HIV-1 provirus in the human genome can be regulated by miRNA, miR-N367 in transcription and translation [91, 92] and Chen et al. [53] have reported that endogenous siRNAs, endo453 and endo392 can silence human long interspersed nuclear element 1 (LINE-1) activity through DNA methylation. Further, the ribonuclease (RNase) III enzyme Drosha can process virus-derived cytoplasmic primary miRNA in the cytoplasm [55]. These data suggest that the resident miRNAs are localized in the cytoplasm, therefore, transcripts of the TE could be processed to miRNAs after a transfer of the transcripts in cell-tocell communication through the microsomes [55,93,94] and crossing inter-kingdom boundaries through the diet [20,21,75,95]. About criteria 3 of the RNA wave; the Rigs can self-proliferate. At first step, transitivity was found as described above that miRNA-mediated cleavage of an RNA can trigger the production of secondary siRNA in the human cells [14]. Further, RNA-directed RNA polymerase (RdRP)-like proteins and an RdRP ribozyme C47U were identified [92,96-98], suggesting that both host and donor Rigs could be amplified in the cytoplasm of human cells. Even if in the case of DNA viruses, EBV virions contain viral mRNAs, miRNAs, and other noncoding RNAs and these RNAs controlled early steps of EBV infection to B cells [99], therefore, robustness of the host human genome may be affected by the interaction between these mobile Rigs and the host ones. Thus, since the superposing state of HIV-1 LTR and miR-N367, #4, and H1 was shown in QRLs in Figure 2(b), that of QRLs would initiate the latency of HIV-1 and the aberration of miRNA BEC by environmental stresses may induce HIV-1 reactivation. Further, new avenues may open the door to investigate superposing between the mobile Rigs and the host ones for life tuning under quantum computing.

2.5. Mobile Rigs

Based on above RNA wave concepts, cellular, the individual and species’ communication in humans could have been mediated by the transmission of the resident Rigs in extracellular microvesicles, such as ectosome (approximate 100 nm - 1 µm in diameter) or exosomes (approximate 50 - 100 nm), and in vesicle-independent form, such as high-density lipoproteins (HDLs) [93,94]. The exosomerelated miRNA secretion has been reported to be implicated in ceramide dependent manner [100] and the packaging of miRNA into the exosomes was selective [101]. Further, the non-vesicular and vesicular secretion of miRNAs were associated with Ago2 [102-104]. Although miRNAs are present in various body fluids and could be selectively included into above exosomes, like retroviral particles, recent researches unveiled that breast milk contains miRNAs in exosomes [105,106]. These milk exosomal miRNAs can be orally delivered to the reciepient cell of the infant offspring with nutrients and could control brain development, growth, and healthy immune system, further, may transmit acquired inheritable phenotype of donors [43]. From this aspect, since exogenous retroviruses and endogenous TEs use micro vesicle pathway elements, such as exosomes [107], HTLV-1 can orally transmit from mother to infant via breast milk vertically and induces human malignancy [108,109]. These results suggest that the Rigs is the mobile genetic element via food, human has used the food-derived Rigs for maintenance of homeostasis and incorporated them into the genome for evolution.

3. The miRNA Gene for the HIV-1 Vaccine

HIV-1 replication is regulated by the viral and cellular miRNA genes. Anti-HIV-1 drugs inhibit reversetranscription (zidovudine, didanosine, zalcitabine, lamivudine, efavirenz, nevirapine, delavirdine mesilate, sanilvudine, emtricitabine and tenefovir), integration (raltegravir, elvitegravir) and viral protease (saqunavir mesilate, saquinavir, ritonavir, lopinavir, indinavir sulfate ethanolate, nelfinavir mesilate and amprenavir) activities for virus particle proliferation. Further, by truvada (emtricitabine and tenefovir) the regimen of HIV-1 infection was simply progressed from high active anti-retrovirus therapy (HAART) and stribild (emtricitabine, tenefovir and elvitegravir) would go on as a preventing agent of HIV-1 infection (Figure 3(a)). However, there is no HIV-1 inhibitor agent for transcription of viral mRNA and viral genome RNA from provirus, and translation of viral proteins for viral particle components. And these chemotherapeutic agents could make drug-resistant HIV-1 clones. Recently, the implication of miRNA and HIV-1 has been reported by several research groups because of its complexes [110- 116]. The different virus clones and infecting target cells showed different expression of the miRNA genes. Further, small viral RNAs of approximate 26,000 sequences

(18 - 22 nts) have been detected in HIV-1 infected SupT1 cells by deep sequencing [115]. Viral siRNAs, such as vsiR-298, vsiR-384, vsiR-3228, vsiR-6496, vsiR-7341, vsiR-8200, vsiR-8943, and vsiR-9095 can target sense HIV-1 mRNAs [115]. On the other hand, viral miRNAs, miR-H1, miR-N367, miR-TAR-5p and miR-TAR-3p target the HIV-1 nef/LTR sequences, and cellular hsamiRNAs, miR-29a, miR-28, miR-125b, miR-150, miR- 223, miR-382, miR-133b, miR-138, miR-149 and miR- 326 also target the nef/3’ LTR sequences [117,118]. Furthermore, expression of HIV-1 transcription positive factor, PCAF, Cyclin T1 and Pur-α were suppressed by miR-17-5p and miR-20a, miR-198, miR-27b, miR-29b, miR-150 and miR-223, and miR-15a, miR-15b, miR-16, miR-20a, miR-93 and miR-106b, respectively [117,118].

These viral and cellular anti-HIV-1 promoter miRNAs decreased viral replication (Figure 3(b)), suggesting that Rigs could have responsible for the latent state of HIV-1 and promoter region-related mi-RNAs could be effective repressors of HIV-1 replication. On possible idea is that mixed cocktails of miRNAs for HIV-1 infection may be possible to use as HIV-1 edible vaccines [75,92].

4. An Anti-miRNA Agent, Miravirsen

MiR-132 enhances HIV-1 replication, therefore, antimiRNA oligonucleotide (AMO) would be applicable for therapy HIV-1 infection [119]. As concerning to longitudinal HIV infection, treatment for dual and single chronic HBV and/or HCV co-infection have to set up because of 3% - 5% of HIV-infected individuals [120]. MiR-122 is the most dominant miRNA gene (approximate 70% of the total miRNA) expressed in the liver. The miRNA gene can control lipid and cholesterol metabolism and maintain the levels of the plasma cholesterol [121]. Although lipid and cholesterol metabolism are regulated on day-light dependence, miR-122 targeted the circadian rhythm of the metabolic regulation in the liver [122]. Further, mouse miR-122 knockout (KO) in germline or in liver-specific resulted in hepatosteatosis, hepatitis, and the development of tumor, therefore, miR-122 functioned as tumor suppressor [123]. The expression of miR-122 in the liver permits HCV 1b replication [124]. And the HCV replication was repressed about 80% by anti-miR- 122. The miR-122 gene can bind to the 5’UTR of HCV genomic RNA [125] and stimulate HCV protein translation [126] but contradictorily, miR-122 did not directly stimulate HCV replication [127,128]. Although treatment of anti-miR-122 LNA, miravirsen reduced HCV RNA in serum of HCV-infected individuals on Phase IIa trial [129], in the case of chronic hepatitis C, there is no correlation between miR-122 and HCV RNA levels of patients [130]. The AMO LNA is clearly effective to HCV infection but information of miR-122 to HCV life cycle has not yet been ciphered. On the contrary, miR-122 has been reported to be suppressed in chronic HBV infected patient [131] and the reducing expression of miR-122 in chronic HBV was explained through expression inhibition of HBV enhancer HNF3 and HNF4α because miR- 122 requires HNF for its own transcription [132]. The miR-122 mimic LNA may be considered as a candidate of HBV therapy. For HIV-1-infected individuals, miR- 122 was increased in HIV-1-infected T cells [133]. In a scenario, if HIV-1 replication could be augmented in CD4+ T cells and macrophages by miR-122, it is plausible whether miravirsen can be examined for HIV-1 infection as well as dual HIV infection with HCV or not because the PBMCs pool of the liver. At a computation analysis, miR-3065-3p has recently been predicted as an candidate of antiviral therapeutic agent for HIV-1, HCV and HBV triple infection [134]. We have to challenge ahead to cure the mixed infection for HIV-1 eradication.

5. Linking Rig’s Pieces of Edible Vaccine from Stem Cell Therapy for HIV-1

Corresponding to the evidence-based medicine, it took more than 25 years to treat infection of HIV-1 with allogenic hematopoietic cell transplantation therapy using stem cells derived from bone marrow or peripheral blood; however, the evidence is that most of all clinical trials were unsuccessful [40]. Since use of treatment of HAART, the opportunity infections were decreased and the mortality among HIV-1 infected individuals increased. However, the incidence of malignancies, such as nonHodgkin’s lymphoma arises in HIV-1 infection [35,36,38] and the lymphoma has still been remained as the most lethal complication of AIDS. Recently a HIV-1 patient arisen acute myeloid leukemia (AML) has been reported to success the reconstitution of CD4+ T cells and reducing of the size of the potential HIV-1 reservoir after stem cell therapy with CCR5∆32 donors [41]. Consequently, the patient remains without any evidence of HIV-1 infection for more than 3.5 years after discontinuation of anti-retroviral therapy. However, before the stem cell therapy, the patient was treated with cyclophosphamide and a 400 or 200-cGy total body irradiation as immunosuppressive treatment with anti-lymphoma antibodies, gemtuzumab, and anti-lymphoma agents, amsacrine, fludarabine and cytarabine at first transplantation and the second one. Further, CXCR4 expression was normal on recovered CD4+ T cells, but CXCR4 susceptible HIV-1 also be not detected, therefore, X4 HIV-1 did not rebound. Although the point of HIV-1 eradication was not so clear, there is an unconvincing evidence that CCR5- ∆32 stem cell therapy was effectively replaced with donor-derived CD4+ T cells and HIV-1 was eradicated. Even if there were CCR5 deleted stem cells or non-tumorigenic and complete reprogrammed iPS cells and the cells would be used for stem cell therapy [42], the allogenic transplantation would have the similarly unsure problems, such as the low efficacy, graft versus host (GVH) reactions, and harmful interaction between antiHIV drugs and anti-GVH agents. Further, on early time, CCR5∆32 heterozygosity has not been observed to inhibit HIV-1 transmission in homosexual or hemophiliac populations [135] and in uninfected individuals with a range of HIV-1 exposures, the prevalence of homozygosity for the CCR5∆32 allele increases with increasing HIV-1 exposure [136] because several non-CCR5 receptors, such as CCR3 and CCR2b are HIV-1 entry cofactors. Therefore, non-X4 HIV-1 might be transmissible in individuals CCR5∆32 homozygous and CCR5∆32 is not an absolute protection factor. In addition, while the miRNA genes are not recognized for the stem cell therapy at all, the relations between miRNAs and lymphoma or between miRNAs and stem cell therapy, or between miRNAs and chemotherapy in the HIV-1 patient are in the cloud. Recently, clinical transplantation of the tracheobronchial airway with a stem cell has been reported and miRNA expression of patients were monitored [137]. If we could investigate miRNA gene profiles of a HIV-1

infected patient for allogenic CCR5∆32 homozygous T cell transplant from CCR5∆32 donors, we might elucidate the question which miRNAs and QRLs can suppress HIV-1 replication and eradicate HIV-1 reservoirs. We know the host miRNA genes which can suppress HIV-1 replication described above, that may be an idea for therapeutic application for HIV-1 eradication, such as the edible Rig vaccine. Subsequently it would be concluded that therapy for lymphoma and eradication of HIV-1 are quite differently biological challenges; however, as described in miR-122 about HCV replication and tumor suppressor, a Rig may be implicated in both viral pathogenesis in the longitude alive HIV-1 patients and AML tumorigenesis. Further, as shown in Figure 4, xenotropic miRNAs in foods and miravirsen were analogous on the concept of principle under the QRL as the information transmission. If xenotropic miRNAs in microvesicles were actively released from allogenic CCR5∆32 stem cells, cure effect of CCR5∆32 homozygous T cell transplant may be caused by the xenotropic Rigs from the transplant cells (Figure 4), furthermore, its efficacy may be implicated in the dilution effect. Since allogenic CCR5∆32 stem cell therapy should not be valued without Rig idea in the lineage specificity even if iPS cells could be used, pharmacological approach with Rigs would be more relevant for HIV-1 eradication than stem cell therapy. Furthermore, the global scale of the HIV-1 epidemic needs to cure large numbers of patients in the limited settings. Thus, miRNA assessment is the most important for challenging HIV-1 eradication and edible Rig vaccine as the QRL may be suitable for the longitude HIV-1 cure together with chemotherapy and stem cell therapy.

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