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Lysozyme and RNases as anti-HIV components in β-core preparations of human chorionic gonadotropin

Sylvia Lee-Huang, Paul L. Huang, Yongtao Sun, Philip L. Huang, Hsiang-fu Kung, Diana L. Blithe, and Hao-Chia Chen
PNAS March 16, 1999 96 (6) 2678-2681; https://doi.org/10.1073/pnas.96.6.2678
Sylvia Lee-Huang
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Paul L. Huang
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Yongtao Sun
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Philip L. Huang
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Hsiang-fu Kung
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Diana L. Blithe
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Hao-Chia Chen
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  1. Communicated by Bernhard Witkop, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, MD

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    Figure 1

    (A) HPLC separation of hCG β-core fragment, human urinary AVL, and AVR from a crude β-core preparations. The elution profile of a representative reverse-phase liquid chromatogram of 2.5 mg run is shown. Details are described in Methods. (B) Characterization of AVL and AVR. SDS/PAGE was carried out on crude β-core (Sephadex G100 gel chromatography fractionated), fractions P1-P7 of C18 reverse-phase HPLC, pure β-core, AVL, AVR, lysozyme, and RNase. Each lane contains about 5–10 μg of sample. The presence (+) or absence (−) of anti-HIV, lysozyme, and RNase activities are shown under the SDS/PAGE pattern. Proteins smaller than 11 kDa were not separated in this SDS/PAGE system.

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    Figure 2

    AVR and AVL are active in HIV-1 inhibition. Dose–response anti-HIV activities of AVL, AVR, pure β-core, chicken egg white lysozyme, and bovine pancreatic RNase were assayed by viral production (p24 ELISA) in (A) ACH2 lymphocytes and (B) U1 monocytes. Each data point is the mean of triplicate. Identical dose–response anti-HIV activity was obtained for human milk lysozyme and human neutrophil lysozyme (data not shown).

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    Figure 3

    RNase activity of AVR. (A) RNase activity of AVR was assayed by degradation of total RNA isolated from HIV-infected ACH2 lymphocytes. AVR demonstrated potent RNase activity comparable to that of bovine pancreatic RNase A, whereas pure β-core and AVL showed no RNase activity. (B) Dose-dependent RNase activity of AVR.

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Lysozyme and RNases as anti-HIV components in β-core preparations of human chorionic gonadotropin
Sylvia Lee-Huang, Paul L. Huang, Yongtao Sun, Philip L. Huang, Hsiang-fu Kung, Diana L. Blithe, Hao-Chia Chen
Proceedings of the National Academy of Sciences Mar 1999, 96 (6) 2678-2681; DOI: 10.1073/pnas.96.6.2678

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Lysozyme and RNases as anti-HIV components in β-core preparations of human chorionic gonadotropin
Sylvia Lee-Huang, Paul L. Huang, Yongtao Sun, Philip L. Huang, Hsiang-fu Kung, Diana L. Blithe, Hao-Chia Chen
Proceedings of the National Academy of Sciences Mar 1999, 96 (6) 2678-2681; DOI: 10.1073/pnas.96.6.2678
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