Gene therapy and infectious diseases

In summary, gene therapy using morpholino antisense oligomers has shown promise in inhibiting the replication of various viruses in cell cultures and animal models. However, more research and clinical studies are needed before it can be applied to effectively treat infectious diseases in humans. Technological advances and targeted studies, such as those involving specific viral transcripts, have shown potential in treating diseases such as herpes, influenza, respiratory syncytial virus, measles, dengue, and Ebola. While it may be possible to use gene therapy to cure infectious diseases, further developments and studies are necessary before it can be widely applied in clinical settings.
  • #1
Jin S Zhang
20
0
Can gene therapy be used to cure the infectious diseases?
 
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  • #2
It may be possible in some cases, but we still need technological advances and many clinical studies before it can be applied to treat diseases.

Here is a paper from 1998: http://www.pubmedcentral.nih.gov/picrender.fcgi?artid=121375&blobtype=pdf And here one from 2005: http://nar.oxfordjournals.org/cgi/reprint/33/1/235
 
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  • #3
Here are some fairly recent preclinical antiviral reports using Morpholino antisense oligos, mostly targeted to viral transcripts.

Moerdyk-Schauwecker M, Stein DA, Eide K, Blouch RE, Bildfell R, Iversen P, Jin L. Inhibition of HSV-1 ocular infection with morpholino oligomers targeting ICP0 and ICP27. Antiviral Res. 2009 Aug 6. [Epub ahead of print]

Gabriel G, Nordmann A, Stein DA, Iversen PL, Klenk HD. Morpholino oligomers targeting the PB1 and NP genes enhance the survival of mice infected with highly pathogenic influenza A H7N7 virus. J Gen Virol. 2008 Apr;89(Pt 4):939-48.

Krähling V, Stein DA, Spiegel M, Weber F, Mühlberger E. SARS-Coronavirus triggers apoptosis via protein kinase R but is resistant to its antiviral activity. J Virol. 2008 Dec 24. [Epub ahead of print]

Lai SH, Stein DA, Guerrero-Plata A, Liao SL, Ivanciuc T, Hong C, Iversen PL, Casola A, Garofalo RP. Inhibition of Respiratory Syncytial Virus Infections With Morpholino Oligomers in Cell Cultures and in Mice. Mol Ther. 2008 Apr 29; [Epub ahead of print]

Lupfer C, Stein DA, Mourich DV, Tepper SE, Iversen PL, Pastey M. Inhibition of influenza A H3N8 virus infections in mice by morpholino oligomers. Arch Virol. 2008 May;153(5):929-37. Epub 2008 Mar 28.

Paessler S, Rijnbrand R, Stein DA, Ni H, Yun NE, Dziuba N, Borisevich V, Seregin A, Ma Y, Blouch R, Iversen PL, Zacks MA. Inhibition of alphavirus infection in cell culture and in mice with antisense morpholino oligomers. Virology. 2008 Jul 5;376(2):357-70. Epub 2008 May 12.


Patel D, Opriessnig T, Stein DA, Halbur PG, Meng XJ, Iversen PL, Zhang YJ. Peptide-conjugated morpholino oligomers inhibit porcine reproductive and respiratory syndrome virus replication. Antiviral Res. 2008 Feb;77(2):95-107. Epub 2007 Oct 4

Sleeman K, Stein DA, Tamin A, Reddish M, Iversen PL, Rota PA. Inhibition of measles virus infections in cell cultures by peptide-conjugated morpholino oligomers. Virus Res. 2008 Dec 4. [Epub ahead of print]

Stein DA, Huang CY, Silengo S, Amantana A, Crumley S, Blouch RE, Iversen PL, Kinney RM. Treatment of AG129 mice with antisense morpholino oligomers increases survival time following challenge with dengue 2 virus. J Antimicrob Chemother. 2008 Sep;62(3):555-65. Epub 2008 Jun 19.

Stein DA, Shi PY. Nucleic acid-based inhibition of flavivirus infections. Front Biosci. 2008 Jan 1;13:1385-95.

Stone JK, Rijnbrand R, Stein DA, Ma Y, Yang Y, Iversen PL, Andino R. A morpholino oligomer targeting highly conserved internal ribosome entry site sequence is able to inhibit multiple species of picornavirus. Antimicrob Agents Chemother. 2008 Jun;52(6):1970-81. Epub 2008 Mar 17.

Zhang B, Dong H, Stein DA, Shi PY. Co-selection of West Nile virus nucleotides that confer resistance to an antisense oligomer while maintaining long-distance RNA/RNA base pairings. Virology. 2008 Dec 5;382(1):98-106. Epub 2008 Oct 7.

Zhang B, Dong H, Stein DA, Iversen PL, Shi PY. West Nile virus genome cyclization and RNA replication require two pairs of long-distance RNA interactions. Virology. 2008 Mar 30;373(1):1-13. Epub 2008 Feb 6.

Zhang YJ, Bonaparte RS, Patel D, Stein DA, Iversen PL. Blockade of viral interleukin-6 expression of Kaposi's sarcoma-associated herpesvirus. Mol Cancer Ther. 2008 Mar;7(3):712-20.

Burrer R, Neuman BW, Ting JPC, Stein DA, Moulton HM, Iversen PL, Kuhn P, Buchmeier MJ. Antiviral effects of antisense morpholino oligomers in murine Coronavirus infection models. J. Virol. 2007 Jun;81(11):5637-48. Epub 2007 Mar 7.

Deas TS, Bennett CJ, Jones SA, Tilgner M, Ren P, Behr MJ, Stein DA, Iversen PL, Kramer LD, Bernard KA, Shi PY. In vitro resistance selection and in vivo efficacy of morpholino oligomers against West Nile virus. Antimicrob Agents Chemother. 2007 Jul;51(7):2470-82. Epub 2007 May 7.

Moulton HM, Fletcher S, Neuman BW, McClorey G, Stein DA, Abes S, Wilton SD, Buchmeier MJ, Lebleu B, Iversen PL. Cell-penetrating peptide-morpholino conjugates alter pre-mRNA splicing of DMD (Duchenne muscular dystrophy) and inhibit murine Coronavirus replication in vivo. Biochem Soc Trans. 2007 Aug;35(Pt 4):826-8.

Vagnozzi A, Stein DA, Iversen PL, Rieder E. Inhibition of foot-and-mouth disease virus in cell cultures with antisense Morpholino oligomers. J Virol. 2007 Nov;81(21):11669-80. Epub 2007 Aug 29.

Enterlein S, Warfield KL, Swenson DL, Stein DA, Smith JL, Gamble CS, Kroeker AD, Iversen PL, Bavari S, Muhlberger E. VP35 Knockdown Inhibits Ebola Virus Amplification and Protects against Lethal Infection in Mice. Antimicrob Agents Chemother. 2006 Mar;50(3):984-93.

Warfield KL, Swenson DL, Olinger GG, Nichols DK, Pratt WD, Blouch R, Stein DA, Aman MJ, Iversen PL, Bavari S. Gene-Specific Countermeasures against Ebola Virus Based on Antisense Phosphorodiamidate Morpholino Oligomers. PLoS Pathog. 2006 Jan;2(1):e1. Epub 2006 Jan 13.

Yuan J, Stein DA, Lim T, Qiu D, Coughlin S, Liu Z, Wang Y, Bouch R, Moulton HM, Iversen PL, Yang D. Inhibition of Coxsackievirus B3 in Cell-cultures and in Mice by Peptide-Conjugated Morpholino Oligomers Targeting the IRES. J Virol. 2006 Dec;80(23):11510-9. Epub 2006 Sep 20.
 

1. What is gene therapy and how does it work?

Gene therapy is a treatment approach that involves replacing, repairing, or introducing new genes into a person's cells to treat or prevent a disease. This is typically done by using a vector, such as a virus, to deliver the desired gene into the cells. Once inside the cells, the new gene can produce proteins or enzymes that can help correct genetic disorders or fight off infectious diseases.

2. What are some examples of infectious diseases that can be treated with gene therapy?

Some examples of infectious diseases that have been targeted for gene therapy include HIV, hepatitis B, hepatitis C, malaria, and tuberculosis. In these cases, gene therapy is used to either enhance the immune system's response to the infection or to directly target and disable the infectious agent.

3. What are the potential benefits of using gene therapy for infectious diseases?

The use of gene therapy for infectious diseases has several potential benefits. It can provide a long-term solution for treating chronic or recurring infections, as the introduced gene can continue to produce the desired proteins or enzymes in the body. Additionally, gene therapy can be more targeted and specific than traditional treatments, reducing the risk of potential side effects.

4. What are some challenges associated with gene therapy for infectious diseases?

One of the main challenges with gene therapy for infectious diseases is ensuring that the introduced gene reaches the intended target cells and produces the desired effect. This requires careful selection and design of the delivery vector and thorough testing in preclinical studies. There is also a risk of unintended consequences and off-target effects, which must be carefully monitored and managed.

5. Is gene therapy for infectious diseases currently being used in clinical practice?

While gene therapy for infectious diseases has shown promise in preclinical studies, it is still a relatively new and experimental approach. There are currently no approved gene therapies for infectious diseases in clinical practice, but several are in various stages of clinical trials. More research and development are needed to ensure the safety and effectiveness of this treatment approach.

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